Sally Beauty Holdings' (SBH) fourth-quarter earnings beat estimates on Thursday, but its sales growth missed expectation and was the slowest in three years. Sally Beauty reported earnings of 39 cents per share, up 35% from a year ago and 4 cents better than projected. Sales rose 5% to $882.6 million, falling shy of analyst estimates of $885.2 million. It was the weakest quarter-over-quarter growth rate since Q4 2009. Shares edged up 0.5% in midday